Playing A Cassette Tape (Base Level): Eject
WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Press the EJECT push button in order to remove the tape or in order to stop the tape and switch to the radio.